Plate-holder for cameras.



828,526. PATENTED AUG. 14', 1906.- G. B. ABBR & J. H. HARRIS. PLATE HOLDER FOR CAM ERAS.

APPLIUATION FILED JAN. 17. 1906.

w l Z1 M 93 UNITED STATES PATENT OFFICE.

GEORGE BURTON ABER AND JOHN HARLOW HARRIS, OF ROCHESTER, NEW YORK.

Specification of Letters Patent,

Patented Aug. 14, 1906.

Application filed January 17,1906- Serial No. 296.580.

To all whom/ it may concern.-

Be it known that we, GEORGE BURTON ABER and JOHN HARLOW HARRIs,'citiZens of the United States, residing at Rochester, in the county of Monroe and State of New York, have jointly invented certain new and useful Improvements in Plate-Holders for Cameras; of which the following is a specification.

This invention relates to certain new and useful improvements in plate-holders for cameras; and it has for its objects, among others, to provide a simple and inexpensive holder in which the plates may be quickly inserted or removed, and this by a move ment not a sliding one parallel with the movement of the slide, but at right angles thereto. The plate is adapted to be inserted from the face of the holder instead of at the end, the said plate being placed with one end resting upon a spring at one end of the holder and against springs tending normally to force the plate outward, the said plate being forced by the spring at the end upon which it rests into a groove at the opposite end and means being provided for moving the plate against the tension of the said end spring till the end of the plate is removed from its groove, when the outwardlyacting springs serve to force the plate outward from the holder. A push-pin at the end of the holder is designed to actuate the means which serves to force the plate against the action of the end spring upon which it rests.

Other objects and advantages of the invention will hereinafter appear, and the novel features thereof will be specifically defined by the appended claims.

The invention in its preferred form is clearly illustrated in the accompanying drawings, which, with the numerals of reference marked thereon, form a part of this specification, and in which- Figure 1 is a perspective view of a plate holder embodying our improvements. Fig. 2 is a longitudinal section through the same as on the line 2 2 of Fig. 1 looking in the direction of the arrow. Fig. 3 is a sectional detail, the section being taken on the line 3 3 of Fig. 2 looking in the direction of the arrow. Fig. 4 is a detail in elevation with a portion broken away and parts in section, showing one of the bottom springs.

Like numerals of reference indicate like parts throughout the several views.

Referring now to the details of the drawings, 1 designates the sides, 2 the bottom, and 3 the top piece, of the plateholder. The holder is provided with the usual grooves 4 for receiving the slides and with the usual division-plate 5. At the bottom are disposed the bowed springs 6 and 7, one for each plate, and these springs are disposed in suitable grooves S and 9 in the bottom piece 2, as shown, being so disposed as to be compressed when pressure is applied thereupon. The under side of the upper end 3 is provided with grooves 10, into which the plate is designed to be forced by the action of the springs 6 and 7 and in each of which works a spring 11 and 12, respectively, one for each plate, the free ends of the springs being disposed at substantially the center of the length of the end piece, the other ends being secured at 13 in any suitable manner. For each of these upper springs there is provided a pushpin 14 and 15, respectively, which are mounted for endwise movement in the upper end of the holder, preferably through openings in a metallic plate 16, secured to the said end piece 3, as shown. The inner ends of these push-pins are connected in any suitable manner, in the present instance the ends of the springs being bent upon themselves, as seen at 17, and said bent ends passed through suitable openings in the pins. This, however, is but one of the different forms of connection between the pins and the springs.

18 represents spring-plates. They are secured at one end in any suitable manner within the side pieces 1 of the plate-holder, there being two in eachside piece, said spring-plates being arranged in pairs, one of each pair being upon one side of the plate 5 and the other upon the opposite side, so that there are two of these spring-plates upon each face of the holder. The free ends of these springs are curved or bent outwardly, so as to lie normally in a plane beyond the plane of the grooves into which the upper ends of the plates are forced by the springs 6 and 7.

The mode of use is as follows: To insert a plate, its lower edge is first placed upon, say, the spring 6 and then the latter compressed until the upper edge of the plate is brought into a plane below the bottom edge of the upper part 3 of the holder. The plate is then pressed inward against the action of the spring-plates 18 until said spring-plates are compressed sufhciently to bring the upper end of the plate into alinement with its groove 10, when the spring 6 will force the plate upward, so that its upper edge will pass beyond the lower edge of the upper part 3 of the hold er, where it will be retained. When it is desired to remove the plate, the appropriate pushpin is pushed. inward, which forces its spring, say 1.1, against the upper edge of the plate and forcing it downward, compressing the spring 6 until the upper edge of the plate reaches a point below the lower edge of the top part 3, when the spring-plates 18 force the plate outward, so that it can be removed from the holder.

It is to be noticed that the plate when in position is yieldingly held at both top and bottom, as well as having a yielding bearing upon the spring-plates 18, so that liability of injury to the plate in shipment or transportation is reduced to a minimum.

1 t is evident that the invention is equally as applicable to a holder designed for only one plate as for one adapted for holding two photographic plates.

What is claimed as new is- 1.. A photographic-plate holder comprising a spring for receiving the lower edge of the plate, means for engaging the upper edge of the plate to hold it against outward movement, means compressible by the inward pressure of the plate, and means for forcing said plate against said spring to disengage its upper end from said holding means.

2. A photographic-plate holder having a spring at one end, a spring at the opposite end, means for actuating the latter, and springs at the sides of the holder acting at right angles to said end spring.

3. A photographic-plate holder having a spring at one end, a spring at the opposite end, a push-pin for forcing said last-mentioned spring inward, and. means for automatically forcing the plate outward when one end thereof is disengaged in the holder.

4. In a photographic-plate holder, a spring at one end to receive one end of the plate, a spring at the opposite end. to receive the opposite end of the plate, means at said end for normally holding a plate against outward movement, spring-plates compressible by the inward movement of the photographic plate, and means for actuating one of said springs to cause the photographic plate to compress the other.

5. In a photographic-plate holder, a sprmg at one end, said holder having a lateholding recess at the other end, a spring movable in said recess, a push-pin for moving said spring to force the adjacent end of a plate out of said recess, and means for pressing the plate outward when disengaged. from said recess.

In testimony whereof we have hereunto signed our names to this spe *ifieation in the presence of two subscribing witnesses.

GEORGE BURTON ABER. J OHN HARLOXV HARRIS. Vitnesses:

G110. A. BENTON, CHAS. I. MCDOWELL. 

